Abstract：
:We demonstrated that genetically modified fibroblasts can be encapsulated into biocompatible, biodegradable spheres retaining their viability and capacity to continuously secrete nerve growth factor (NGF) for at least two months. Genetically engineered rat fibroblasts producing NGF were encapsulated in an alginate-polylysine gel with the ultimate objective of improving transplantation methodologies. Cultures were suspended in a sodium alginate solution and the suspension was extruded drop-wise into a solution of calcium chloride. Morphological properties of the spheres were assessed by light and electron microscopy. The spheres had a homogenous external membrane, without fibroblasts, protruding from the surface of the capsular membrane. The NGF determinations in culture media showed that encapsulated fibroblasts continued to synthesize NGF for at least 60 days. We also confirmed that secreted NGF was biologically active, by assessing the induction of choline acetyltransferase (ChAT) activity in dissociated embryonic rat septal cultures. These results encourage further studies using in vivo models to determine the value of applying microencapsulated genetically modified cells secreting trophic factors as a therapeutic strategy for central nervous system (CNS) injuries.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Maysinger D,Piccardo P,Filipovic-Grcic J,Cuello ACdoi
10.1016/0197-0186(93)90089-nsubject
Has Abstractpub_date
1993-08-01 00:00:00pages
123-9issue
2eissn
0197-0186issn
1872-9754journal_volume
23pub_type
杂志文章abstract：:Quantitative autoradiography analysis of neurotensin (NT) and somatostatin (SS) binding sites was performed on coronal sections of the medulla oblongata from 2 fetuses, 6 controls and 7 victims of Sudden Infant Death Syndrome (SIDS). Throughout the first postnatal year, mean SS binding site density was similar in cont...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(92)90134-d
更新日期：1992-01-01 00:00:00
abstract：:Apart from acetyl-choline (Ach), adenosine-5'-trisphosphate (ATP) is thought to play a role in neuromuscular function, however little information is available on its cellular physiology. As such, effects of ATP and adenosine on contractility of mice diaphragmatic and skeletal muscles (m. extensor digitorum longa-MEDL)...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2006.06.007
更新日期：2006-12-01 00:00:00
abstract：:Parkinson's disease (PD) is a progressive and debilitating neurodegenerative disorder that affects over one million people in the United States. Previous studies, carried out in young adult rats, have shown that calcitriol, the active metabolite of vitamin D, can be neuroprotective in 6-hydroxydopamine (6-OHDA) models...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2017.04.001
更新日期：2017-09-01 00:00:00
abstract：:The distribution of substance P in the colon of piebald lethal (s(1)/s(1)) mice was studied by radioimmunoassay and immunohistochemistry. These animals inherit as a Mendelian recessive trait an aganglionic distal colon. In the region proximal to the aganglionic segment, there is an extensive transitional or hypogangli...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(84)90026-3
更新日期：1984-01-01 00:00:00
abstract：:Previously, we revealed that the state of the actin cytoskeleton affects the uptake activity of the serotonin transporter (SERT). Recently, it was reported that the C-terminus of SERT interacts with MacMARCKS, a substrate of PKC that can bind to the actin cytoskeleton. To elucidate the importance of the C-terminal reg...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2004.08.008
更新日期：2005-01-01 00:00:00
abstract：:The discovery of nonsynaptic communication in the 1960s and 1970s was an important milestone in investigating the function of the nervous system, and it revolutionized our view about information transmission between neurons. In addition, nonsynaptic communication has a practical importance not only within the nervous ...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2007.06.001
更新日期：2008-01-01 00:00:00
abstract：:Free radicals have been implicated in the pathogenesis of vasogenic brain edema caused by ischemic or traumatic injury. It has been reported that in transgenic mice overexpressing the human CuZn-superoxide dismutase, brain edema is decreased in many cerebral disorders. To investigate the effects of free radicals on th...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(95)00120-4
更新日期：1996-08-01 00:00:00
abstract：:The observation that autophosphorylation converts CaM kinase II from the Ca(2+)-dependent form to the Ca(2+)-independent form has led to speculation that the formation of the Ca(2+)-independent form of the enzyme could encode frequency of synaptic usage and serve as a molecular explanation of "memory". In cultured rat...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/0197-0186(95)00097-6
更新日期：1996-04-01 00:00:00
abstract：:This study aimed to elucidate locomotor activity changes in 6-hydroxydopamine (6-OHDA) induced Parkinson's disease (PD) and investigate the possible beneficial effects of melatonin on altered levels of locomotor activity, cyclooxygenase (COX), prostaglandin E2 (PGE2), nuclear factor kappa-B (NF-κB), nitrate/nitrite an...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2014.09.005
更新日期：2014-12-01 00:00:00
abstract：:Poly(ADP-ribose)polymerase-1 (PARP-1) overactivation is a key event in neurodegeneration but the underlying molecular mechanisms wait to be unequivocally identified. Energy failure, transcriptional derangement and deadly nucleus-mitochondria cross-talk have been proposed as mechanisms responsible for PARP-1 neurotoxic...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2006.08.009
更新日期：2007-01-01 00:00:00
abstract：:Amyotrophic Lateral Sclerosis is a devastating neurological disease that is inevitably fatal after 3-5years duration. Treatment options are minimal and as such new therapeutic modalities are required. In this review, we discuss the role of the myostatin pathway as a modulator of skeletal muscle mass and therapeutic ap...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2012.07.016
更新日期：2012-11-01 00:00:00
abstract：:Glycine can be substrate for two transporters: GlyT1, largely expressed by astrocytes but also by some non-glycinergic neurons, and GlyT2, most frequently present in glycine-storing nerve endings. In morphological studies, GlyT2 expression had been found to be restricted to caudal regions, being almost undetectable in...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2016.07.001
更新日期：2016-10-01 00:00:00
abstract：UNLABELLED:The aggregates of amyloid beta peptides (Aβs) are regarded as one of the main pathological hallmarks of Alzheimer's disease (AD). An imbalance between the rates of synthesis and clearance of Aβs is considered to be a possible cause for the onset of AD. Dipeptidyl peptidases II and IV (DPPII and DPPIV) are se...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2013.03.017
更新日期：2013-06-01 00:00:00
abstract：:With their potent regenerative and protective capacities, stem cell-derived conditioned media emerged as an effective alternative to cell therapy, and have a prospect to be manufactured as pharmaceutical products for tissue regeneration applications. Our study investigates the neuroregenerative potential of human dent...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2021.104961
更新日期：2021-01-16 00:00:00
abstract：:The activity of histochemically demonstrable aspartate aminotransferase was measured histophotometrically in the hippocampal formation, in dorsal root ganglia, and in superior cervical ganglia during postnatal development of the rat. The enzyme activity showed a marked (up to 15 times) increase in the dendritic layers...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(87)90146-x
更新日期：1987-01-01 00:00:00
abstract：:The effects of pretreatment of mice with some drugs which modify GABAergic neurotransmission on the convulsions and cerebellar cyclic nucelotide level changes induced by the subsequent intracerebroventricular administration of 4-isopropyl-2,6,7-trioxa-1-phosphabicyclo(2,2,2)octane-1-oxide (IPTBO) have been studied. Mu...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(84)90095-0
更新日期：1984-01-01 00:00:00
abstract：:The Mg(2+)-ATPase associated with highly purified cholinergic synaptic vesicles isolated from the Torpedo electric organ can be activated by millimolar concentrations of Ca(2+) only to a maximum of 46%. ATP is hydrolyzed in preference to other tri-nucleotides on Mg(2+)-activation but not on Ca(2+)-activation of the en...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(87)90156-2
更新日期：1987-01-01 00:00:00
abstract：:Age-related neurodegenerative diseases are characterized by selective neuron loss, glial activation, inflammation and abnormalities in oxidative metabolism. Thiamine deficiency (TD) is a model of neurodegeneration induced by impairment of oxidative metabolism. TD produces a time-dependent, selective neuronal death in ...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2003.09.008
更新日期：2004-07-01 00:00:00
abstract：:Soluble guanylyl cyclase (sGC) is a key enzyme of the NO-cGMP pathway which is believed to mediate vasoprotective actions. In cardiovascular diseases such as hypercholesterolemia and atherosclerosis, these important functions of the vascular endothelium are strongly impaired. One of the major reasons for this so-calle...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2004.03.026
更新日期：2004-11-01 00:00:00
abstract：:Exposure to high levels of manganese (Mn) results in a neurological disorder, termed manganism, which shares a similar phenotype to Parkinson's disease due to the involvement of the basal ganglia circuitry in both. The initial symptoms of manganism are likely due to the involvement of the globus pallidus, a region ric...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2005.10.012
更新日期：2006-05-01 00:00:00
abstract：:It was shown previously that pure oligodendrocytes release proteins when maintained in a chemically defined medium. Among these proteins, a 53 kDa glycoprotein was characterized as a component accessible from the external surface of these glial cells. Specific antibodies directed against this glycoprotein were obtaine...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(88)90101-5
更新日期：1988-01-01 00:00:00
abstract：:GABAA receptors mediate most of the fast inhibitory transmissions in the central nervous system. These receptors are pentameric complexes that exhibit high structural and pharmacological heterogeneity, as they can be constructed from 19 distinct subunits. GABAA receptors are the targets of numerous clinically relevant...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2018.05.015
更新日期：2018-09-01 00:00:00
abstract：:Traumatic brain injury (TBI) is one of the major cause of morbidity and mortality and it affects more than 1.7 million Americans each year. Depending on its location and severity, TBI leads to structural and functional damage in several parts of the brain such as cranial nerves, optic nerve tract or other circuitry in...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2017.01.019
更新日期：2017-12-01 00:00:00
abstract：:The parenchyma of the anterior pituitary gland is constituted of distinct specialized glandular cell types, some of them being able to secrete two, or more, genetically related hormones. The synthesis and the release of each hormone is a discontinuous process controlled by a variety of chemical signals of hypothalamic...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(85)90146-9
更新日期：1985-01-01 00:00:00
abstract：:To clarify molecular mechanism for sustained activation of gamma protein kinase C (gammaPKC), a neuron-specific subtype, we investigated the involvement of phospholipase A2 (PLA2) products in the membrane association of gammaPKC upon activation of G protein coupled purinoceptors in CHO-K1 and NG 108-15 cells. In addit...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2003.12.006
更新日期：2004-07-01 00:00:00
abstract：:Spinal muscular atrophy (SMA), the leading genetic cause of infant mortality worldwide, is characterised by the homozygous loss of the survival motor neuron 1 (SMN1) gene. The consequent degeneration of spinal motor neurons and progressive atrophy of voluntary muscle groups results in paralysis and eventually prematur...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2017.02.016
更新日期：2017-09-01 00:00:00
abstract：:Aquaporin-4 (AQP4) is a key molecule for maintaining water and ion homeostasis associated with neuronal activity in the central nervous system, but the roles of AQP4 in adult neurogenesis remain largely unexplored. Based on preliminary evidences over the past years, AQP4 appears to emerge as an important player regula...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2010.01.014
更新日期：2010-04-01 00:00:00
abstract：:Inflammation which is an indispensable participant in tumor progression is intricately linked with redox modulation. The pro-inflammatory cytokine Tumor Necrosis Factor (TNFalpha) elevates reactive oxygen species (ROS) in glioblastoma multiforme (GBM). As both TNFalpha and oxidative stress independently play role in r...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2009.10.003
更新日期：2010-01-01 00:00:00
abstract：:The present studies were performed in order to examine the possible role of cyclic GMP-stimulated phosphodiesterase (cGMP-PDE) activity in the inhibitory action of the inflammatory peptide bradykinin on cyclic AMP (cAMP) accumulation in D384 cells. Bradykinin decreased the forskolin-stimulated cAMP accumulation in the...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(92)90149-l
更新日期：1992-09-01 00:00:00
abstract：:There is experimental evidence from radioligand binding experiments for the existence of strong antagonistic interactions between different subtypes of adenosine and dopamine receptors in the striatum, mainly between adenosine A1 and dopamine D1 and between adenosine A2A and dopamine D2 receptors. These interactions s...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(99)00008-x
更新日期：1999-03-01 00:00:00
